绑定一个WPF的DataGrid到DataTable [英] Binding a WPF DataGrid to a DataTable

问题描述

我不擅长英语，因为我不是一个母语。我道歉，如果我做的语言错误：）

I'm not good at English because I'm not a native speaker. I apologize if I've made mistakes in the language :)

我在C＃中的新WPF，我想一个WPF DataGrid绑定到双向的DataTable。现在，当我在DataGrid，DataTable中的变化数据正确地编辑值。当我尝试用下面的$ C $三来一补的数据表：

I'm new in C# and WPF and I'm trying to bind a WPF DataGrid to a DataTable in TwoWay. Now when I edit the values in the DataGrid, data in the DataTable change correctly. When I try to fill the DataTable with the following code:

OleDbDataAdapter adapter = new OleDbDataAdapter("a query", (a connection));
adapter.Fill(dataTable);

在code ++工程，并且DataGrid似乎没事了。但是，当我试试这个：

the code works and the DataGrid seems all right. But when I try this:

dataTable.Rows[0][1] = (some object);

显示值不变化。我试着检查下列方式DataGrid中的值：

the display value doesn't change. I try to check the values in the DataGrid in the following way:

MessageBox.Show((SomeDataGrid.Items[0] as DataRowView).Row[1].ToString());

和事实证明没有问题。我不知道为什么显示值都是这样的。

and it turns out no problem. I'm wondering why the display values are like this.

下面是我DataGrid.CellStyle在XAML：

Here's my DataGrid.CellStyle in XAML:

<DataGrid.CellStyle>
    <Style TargetType="DataGridCell">
        <Setter Property="Template">
            <Setter.Value>
                <ControlTemplate TargetType="DataGridCell">
                    <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="{TemplateBinding Background}">
                        <DataGridDetailsPresenter HorizontalAlignment="Stretch" VerticalAlignment="Center" Content="{TemplateBinding Content}"/>
                    </Grid>
                </ControlTemplate>
            </Setter.Value>
        </Setter>
        <Style.Triggers>
            <!-- triggers -->
        </Style.Triggers>
    </Style>
</DataGrid.CellStyle>

我一直停留在这个问题上了好几天。感谢您的帮助！

I've been stuck on this problem for several days. Thanks for any help!

推荐答案

这工作，也许你可以给一些更多的信息

this works, maybe you can give some more info

视图模型：

    public DataTable MyDataTable { get; private set; }

    //ctor
        _ds = new DataSet("Test");
        this.MyDataTable = _ds.Tables.Add("DT");
        this.MyDataTable.Columns.Add("First");
        this.MyDataTable.Columns.Add("Second");

        this.MyDataTable.Rows.Add("11", "12");
        this.MyDataTable.Rows.Add("21", "22");

    //view is updated with this
    public void UpdateTable()
    {
        this.MyDataTable.Rows[0][1] = "haha";
    }

XAML

    <DataGrid AutoGenerateColumns="True" ItemsSource="{Binding MyDataTable}"/>

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